They have learned that Earth revolves around the Sun.
Scientists use telescopes to observe and study objects in the sky, such as stars, planets, galaxies, and other celestial bodies. Telescopes allow scientists to gather important data, study the properties and behavior of these objects, and make new discoveries about the universe.
by using telescopes and satellites.
light telescopes and radio telescopes whether installed on earth or on space vehicles
scientist on earth build telescopes on top of
The simple predicate is "have learned" because it shows the action or the verb that the subject "scientists" is doing.
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it helps by moving humanity forwards
telescopes
there are more scientists in UK compared to the other countries.
Scientists use telescopes to see into space. Telescopes can be on the ground or in space itself, and they gather light or other electromagnetic radiation from celestial objects to create images of distant planets, stars, and galaxies. Telescopes help scientists study the universe, learn about its origins, and explore its mysteries.
Scientists can see Neptune with telescopes. Also, they have many photos of it from when the Voyager 2 passed by.